JISHOU, HUNAN — Come listen, children, to this story of transpacific electronics shopping. I haven’t quite graduated to be a wholesale exporter of electronic goods, but it seems every time I visit the USA, I end up being a courier of some sort of assorted gadgetry. This time, I even bought one for myself. Last trip, I brought two media players from China to the USA as gifts. These Android-powered “MP5’s” cost about $45, play movies, music, etc., on a 4.5-inch touch screen, and are very popular among Chinese students. It seems they’re also popular in the US, since I had a request to bring three more with me on this trip. Ditto my iPad courier service. On my winter trip, I picked up an iPad for a friend in China, and got to play with it for two weeks before I handed it over. This time, I had to get an iPad2 for his cousin. While I was in Beijing, I visited the Zhongguancun district, where scores of computer and electronics shops huddle in several malls. Unlike American malls, most shops in China that sell similar merchandise are clustered near each other, making shopping and bargaining really easy for ...